docs: def update(self, friendly_name=None, description=None):
      """ Selectively updates Dataset information.
  
      Args:
        friendly_name: if not None, the new friendly name.
        description: if not None, the new description.
  
      Returns:
      """
      self._get_info()
  
      if self._info:
        if friendly_name:
          self._info['friendlyName'] = friendly_name
        if description:
          self._info['description'] = description
        try:
          self._api.datasets_update(self._name_parts, self._info)
        except Exception as e:
          raise e
        finally:
          self._info = None